行更改日志文件中的位置

Question

我使用 logstasher gem 将我的日志转换成 json 对象然后我在每个日志行之前添加一行，在开发中一切正常。在生产中有时线会改变位置。

这是应该的

{"index":{"_id":"3cc6221b633bd2bd0a95865e9c0c3dfd"}}
{"method":"GET","path":"/public/so_list","format":"*/*","controller":"public","action":"so_list","status":200,"duration":3152.27,"view":246.58,"db":2882.97,"ip":null,"route":null,"request_id":null,"source":"unknown","tags":["request"],"@timestamp":"2018-11-15T18:53:36Z","@version":"1"}
{"index":{"_id":"4b94f72318d88a8d7c1c5e46e5465246"}}
{"method":"GET","path":"/public/ajx_group_items/DY2149","format":"*/*","controller":"public","action":"ajx_group_items","status":200,"duration":118.89,"view":31.89,"db":74.0,"ip":null,"route":null,"request_id":null,"source":"unknown","tags":["request"],"@timestamp":"2018-11-15T18:53:36Z","@version":"1"}
{"index":{"_id":"b1ceb09e59379be7e26bff6b0d91ccd9"}}
{"method":"GET","path":"/public/login","format":"html","controller":"public","action":"login","status":200,"duration":44.24,"view":41.55,"db":1.25,"ip":null,"route":null,"request_id":null,"source":"unknown","tags":["request"],"@timestamp":"2018-11-15T18:53:36Z","@version":"1"}

有时会发生这种情况

第 2 行应与第 3 行换位

{"index":{"_id":"f6ee3d21d6e424652cdca28e9fdff611"}}
{"index":{"_id":"3c5050daede3f29d0402e888eef02046"}}
{"method":"GET","path":"/public/ajx_group_items/DY7100","format":"*/*","controller":"public","action":"ajx_group_items","status":200,"duration":341.08,"view":169.3,"db":157.56,"ip":null,"route":null,"request_id":null,"source":"unknown","tags":["request"],"@timestamp":"2018-11-15T18:53:37Z","@version":"1"}
{"method":"GET","path":"/public/ajx_group_items/DY7000","format":"*/*","controller":"public","action":"ajx_group_items","status":200,"duration":334.34,"view":191.42,"db":129.59,"ip":null,"route":null,"request_id":null,"source":"unknown","tags":["request"],"@timestamp":"2018-11-15T18:53:37Z","@version":"1"}
{"index":{"_id":"f6f59814f6cd45851d529a4efd1d5989"}}
{"method":"GET","path":"/public/ajx_group_items/DY7210","format":"*/*","controller":"public","action":"ajx_group_items","status":200,"duration":305.02,"view":221.0,"db":72.51,"ip":null,"route":null,"request_id":null,"source":"unknown","tags":["request"],"@timestamp":"2018-11-15T18:53:37Z","@version":"1"}

我的初始化程序看起来像那样

if LogStasher.enabled?

  LogStasher::ActiveSupport::LogSubscriber.class_eval do

    alias :original_process_action :process_action

    def process_action(event)

      # this creates the first line before each log
      log_extra_line = Logger.new("#{Rails.root}/log/logstasher.log")
      hash = {index: {_id: event.payload[:request_id]}}
      log_extra_line.info(hash.to_json) 

      # this adds the log line
      original_process_action(event)
    end

  end

end

然后我将初始值设定项更改为此假设如果我将两个 arg 都传递给一个函数，然后做日志它工作，但我仍然有同样的问题。

if LogStasher.enabled?

  LogStasher::ActiveSupport::LogSubscriber.class_eval do

    alias :original_process_action :process_action

    def process_action(event)
      hash = {index: {_id: event.payload[:request_id]}}
      do_logs(hash, event)
    end

    def do_logs(elastic_hash, original_log)
      # this creates the first line before each log
      log_extra_line = Logger.new("#{Rails.root}/log/logstasher.log")
      log_extra_line.info(elastic_hash.to_json) 
      # this adds the log line
      original_process_action(original_log)
    end

  end

end

我做错了什么？

Answer 1

这跟你的服务器并发度有关。当运行在本地时，默认情况下 Rails 服务器运行单线程。在生产中，它们通常是多线程的。日志行出现乱序，因为它们属于不同的请求。

查看 the rails docs on threading and concurrency 了解更多信息。

Answer 2

在初始化程序中，在 elastic_hash 我添加了事件。新哈希首先具有索引，然后是事件。那我做

log = Logger.new("#{Rails.root}/log/logstasher.log")
log.info(elastic_hash.to_json)

有了这个我只为每个日志创建一行，包括索引和事件并且有效

在这种情况下，我不需要 gem logstasher 我相信它的工作方式也会有所不同

行更改日志文件中的位置

lines change places in logfile

ruby

logging

production

rubygems

ruby-on-rails